Update runtime files
diff --git a/runtime/doc/textprop.txt b/runtime/doc/textprop.txt
index 55a5ed3..5d55952 100644
--- a/runtime/doc/textprop.txt
+++ b/runtime/doc/textprop.txt
@@ -1,4 +1,4 @@
-*textprop.txt* For Vim version 8.2. Last change: 2020 Feb 22
+*textprop.txt* For Vim version 8.2. Last change: 2020 Mar 05
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -133,8 +133,8 @@
to {lnum}, this is a zero-width text property
bufnr buffer to add the property to; when omitted
the current buffer is used
- id user defined ID for the property; when omitted
- zero is used
+ id user defined ID for the property; must be a
+ number; when omitted zero is used
type name of the text property type
All fields except "type" are optional.